sd_bus_get_name_creds(3) — Linux manual page


SD_BUS_GET_NAME_CREDS(3)  sd_bus_get_name_creds SD_BUS_GET_NAME_CREDS(3)

NAME         top

       sd_bus_get_name_creds, sd_bus_get_owner_creds - Query bus client

SYNOPSIS         top

       #include <systemd/sd-bus.h>

       int sd_bus_get_name_creds(sd_bus *bus, const char *name,
                                 uint64_t mask, sd_bus_creds **creds);

       int sd_bus_get_owner_creds(sd_bus *bus, uint64_t mask,
                                  sd_bus_creds **creds);

DESCRIPTION         top

       sd_bus_get_name_creds() queries the credentials of the bus client
       identified by name. The mask parameter is a combo of
       SD_BUS_CREDS_* flags that indicate which credential info the
       caller is interested in. See sd_bus_creds_new_from_pid(3) for a
       list of possible flags. On success, creds contains a new
       sd_bus_creds instance with the requested information. Ownership
       of this instance belongs to the caller and it should be freed
       once no longer needed by calling sd_bus_creds_unref(3).

       sd_bus_get_owner_creds() queries the credentials of the creator
       of the given bus. The mask and creds parameters behave the same
       as in sd_bus_get_name_creds().

RETURN VALUE         top

       On success, these functions return a non-negative integer. On
       failure, they return a negative errno-style error code.

       Returned errors may indicate the following problems:

           An argument is invalid.

           Added in version 246.

           The bus cannot be resolved.

           Added in version 246.

           The bus has already been started.

           Added in version 246.

           The bus was created in a different process, library or module

           Added in version 246.

           Memory allocation failed.

           Added in version 246.

NOTES         top

       Functions described here are available as a shared library, which
       can be compiled against and linked to with the
       libsystemd pkg-config(1) file.

       The code described here uses getenv(3), which is declared to be
       not multi-thread-safe. This means that the code calling the
       functions described here must not call setenv(3) from a parallel
       thread. It is recommended to only do calls to setenv() from an
       early phase of the program when no other threads have been

HISTORY         top

       sd_bus_get_name_creds() and sd_bus_get_owner_creds() were added
       in version 246.

SEE ALSO         top

       systemd(1), sd-bus(3), sd_bus_creds_unref(3)

COLOPHON         top

       This page is part of the systemd (systemd system and service
       manager) project.  Information about the project can be found at
       ⟨⟩.  If you have
       a bug report for this manual page, see
       This page was obtained from the project's upstream Git repository
       ⟨⟩ on 2023-12-22.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2023-12-22.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
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       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

systemd 255                                     SD_BUS_GET_NAME_CREDS(3)

Pages that refer to this page: sd-bus(3)sd_bus_creds_get_pid(3)sd_bus_creds_new_from_pid(3)sd_bus_query_sender_creds(3)systemd.directives(7)systemd.index(7)